Method of cutting nail-caps and can ends.



YAYB. H. LARKIN.

METHOD 0F CUTTING NAIL CAPS AND CAN ENDS.

APPLlcmoN FILED APR. 24. 1909.

y11,186,917. Pat-@111611111116 13, 1916.

UNITED STATES PJE BERNRD`H. LABKIN, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, 'T0

CION'IINNTAL CAN COMEANY, INC.. A CORPORATION OF NE?! YORK.

Lineair?.y

Specication of Letters Patent.

Patented Jima 13, Ti.

Application led April 24, 1909. Serial No. 492,077.

To all whom t may concern Be it known that I, BERNARD H. LAnnIN, a citizen of the United States, residing at Chicago, in the county of Cook, State of lllinois, have invented certain new and usefui Improvements in Methods of Cutting Nail-Caps and Can Ends,of which the following is a description, reference being had to the accompanying drawing and to the letters and x figures of reference marked thereon.

The inventionrelates to new andy useful improvements in the method of cutting and forming nail caps and can ends, having a centraly opening therein, from sheet metal.

An object of the invention is to provide a method of utilizing the waste material cut out in forming the central opening in a can end to form nail caps, and to expedite the making of the nail caps.

Prior to my invention, it has heen custo1n ary to take the disks cut out in forming the central opening in can ends and to feed these dislts one by one to a suitahie machine for forming nail caps. By my improved method, the nail caps are all formed prior to cutting out of the' waste material So' that when the waste material is cut out, the nail cap is completed I In the drawings: Figure l shows a sheety of metal having,Y nail caps formed therein, also disks cut ont of the waste eds of the sheet and in dotted iines, the liiisition of the can ends, which are to be subsequently ont from the sheet. Fig. 2 is a view similar to Fin'. l, showing the sheet presented to a gang of dies and the can ends ylxch are cut out by saidgang of dies in full lines, while in dotted lines, a second presentationof a sheet to nthe gang of dies is indicated. Fig. 8 Y,

is a section through the sheet showing one of the formed nail caps. Fig. 4 is a pian view showing a formed can end and a nail cap formed from the waste material out out in forming the central opening therein. Fig. 5 is a plan view of a finished nail cap.

ln order that the waste material left. after cutting can ends from a sheet of metal -may he reduced to a minimum, said can ends are preferably arranged in rows with said can ends staggered relative to each other, in adjacent row. This will cause the waste material to be concentrated at the ends or sidesof the sheet. K

nFig. l, have shown ai sheet of metal formed, and the waste wir A and the concentrated waste ends are indicated at l, 1, and 2, 'biiis concentrated waste material is utilized to a certain extent by cutting therefrom disks which may he shaped into any desired torni, The disks i which are cut out from the waste ends are indicated at 3 in Figs. l and 2. in order that the sheet may be better handled. to out the disks from the waste ends, said sheet ie first presented to. a gang o dies for cutting the waste ends before the can ends are eut from the sheet. In forming a can end hav mgk a central opening, has been found practicable to utilize this waste material in iol-nung nail caps. In Fig. l have shown, 73 a nail cap 4, which consists of a dish o' material having its central portion raised l at 5 and perforated as at Il. These or.; are o f well known construction and further description will not he necessary. :fi: According to my method, a nail cap 5 le.

formed and perforated ont not out ont rt the same time that the dis. e ont ont fr the waste ends, l acc-'m1,- ,h this remit providing a gang of dice which will sh and perforate each nail` cap at the san-.e time the waste ends are out, as shown in Fig' A i: After nach one oi theI nail l) the sheet oi' metal is pres oi diesl and a series o! f in ra from. "s herein shown thL series are arranged in prix wise the sheet and the dista jacent can ends is .alightiv twice the diameter o! a aan and :f1 that suhsequent operations, other can ends n he cut therefrom 23)/ shitting? tno sheet et' changilngr the shi-ot nl for v l Vhiie I have arrangement oi' can ends sia-able in cutting one zo v a standard sheet of metal, it i Stood that troni ce'tam vention, any :lesive-.5 ends may he iollov. being that the. waste ma end is to he first formed in that when waste material the central opening. the: i, pleted.

I have shown. in 'Fig second series of can out hy saine gang o the sheet end for end. Eli,

in the can end. It will also be. obvious that frmn certain aspects of the invention, the

nail caps may he formed in the waste mate# rial to he cut out in forming each can cap without operating upon the waste ends to eut out the disks 33, and, said disks 3, 3,.

if cut from the waste ends lmay he cut in a separate operation l prefer however. to forni the nail caps at the sainetimeascutting the disks from the waste ends, for the ,reason that this saves presenting'the sheet yfor a separate operation, and practically reduces the eost of nmkiner the nail caps to nothing, for the reason that the sheet material innst he presented to :i gung: of dies for cutting outy the disks I. from the ywaste ends.

i While .l have descrihed in y invention as espeeially adapted for formingr nail caps,

it will he ohvions that from certain aspects oi' the inw-nilon. other1 :1l-tickles than nath cops may he formed from the nlastcfrlnlte, rial eut ont in formingr the centralopening in the can end. The essence of the invention is in the forming of the article which is to he made from sind waste material, subsequent to the cutting out of said waste material, so that 1n a Single operation, the article `is`finshed` hy cutting out the vwaste material und the can end formed.

Having thus particularly described my invention, what, l claim as new undfdesire end, presenting vtheshect to another''ganer `of lies and cutting out und shaping Ain a series of lndepeml'ent operations the'ean ends und euttlngr out the formed nail cap to form the'eentral openingineaeh can end.

Y, ln testnnony wher-cotti all'x lnyslgnature. in presence of two witnesses,

BERNARD llAltKlN. 

